Can't resolve some model names

[Qiao Ding]

Environment:

Odoo 13 with odoo-stub installed
I have tried "Clear Cache and Restart" but still no luck.

Issue:

Some model names can be resolved but some cannot.

For example, In my project:

questionnaire_id = fields.Many2one('survey.survey', string='Registration Questionnaire')
gives me red lines under 'survey.survey'

however another field
welcome_email_template = fields.Many2one('mail.template')
is correct.

both 'survey.survey' and 'mail.template' are odoo models under odoo/odoo/addons. And there are no runtime errors for my environment.

[Deleted user]

Did you include the module survey in the manifest ?

[Qiao Ding]

Thank you very much. I missed that. After adding dependency it's good now.